Massive, isolated and with no crew on board, this “ghost” oil platform operates alone in the middle of the ocean and ushers in a new era in exploration.

At sea, a new generation of oil structures draws attention for operating with sensors, automatic systems, and remote supervision, without the continuous presence of workers living on the platform.

An oil platform without permanent crew can operate at sea for long periods with sensors, automatic safety systems, and remote monitoring done from onshore centers.

Known in the industry as Normally Unattended Installations, these structures do not operate without human supervision: the difference is that daily operations occur without teams living on board.

The term “ghost” is often used to describe the image of an isolated structure in the ocean, producing without workers circulating on the platform.

In practice, the model relies on operators, engineers, maintenance technicians, and support teams who monitor data remotely and make visits when there is an operational need.

This type of installation represents a change from traditional offshore platforms, generally associated with accommodations, cafeterias, helipads, onboard shifts, and permanent teams.

In uninhabited units, human presence is limited to inspections, scheduled maintenance, repairs, and responses to specific occurrences.

In Brazil, Navy documents record fixed platforms classified as uninhabited, indicating that structures without permanent occupation are already part of the national offshore environment.

The mode of operation, however, varies according to the project, the producing field, the safety system, and the authorizations required for each unit.

How an oil platform without a crew works

The operation of an uninhabited platform combines industrial automation, telecommunications, process sensors, cameras, emergency shutdown systems, and equipment programmed to execute operational routines.

Valves, pumps, meters, and control systems continuously send data to onshore operation rooms.

From these centers, operators monitor pressure, flow, temperature, alarms, power generation, equipment integrity, and production conditions.

When the project allows, adjustments can be made remotely.

In other cases, the system itself performs automatic actions within predefined limits.

Automation does not remove human labor from the production chain.

It shifts part of the activities to onshore bases, control centers, engineering teams, maintenance specialists, and support vessels.

What changes is the platform’s routine, which no longer depends on workers living permanently on the structure.

According to DNV, an international classification and risk management organization, normally unattended installations are designed to operate mainly through automated processes and without continuous personnel presence.

This model can be used in fields where a smaller structure is considered technically and economically more suitable than a conventional platform.

Remote monitoring technology in the offshore sector

The main component of this type of installation is the control system.

It gathers sensors, panels, alarms, safety equipment, and programs responsible for keeping production within the parameters defined in the project.

In units without a permanent crew, the reliability of these systems gains greater importance, as there are no operators available on-site for immediate checks.

Communication with land can occur through different means, such as satellite, radio, fiber optics, or dedicated networks.

The choice depends on the distance from the coast, the available infrastructure, the type of field, and safety requirements.

More than transmitting data, the system needs to provide redundancy to reduce the risk of total communication loss.

When a transmission route fails, another can take over the operation if the project has this capability.

If the failure compromises the safe monitoring of the unit, automatic procedures can lead the platform to a safer operational condition, including emergency shutdown or closure of critical systems.

International projects show how this concept is applied.

The Tolmount platform, in the United Kingdom, is described by its infrastructure operator as a normally uninhabited facility, remotely monitored from an onshore terminal.

The unit brings together wells, flow lines, production separator, produced water treatment, power generation, and helipad.

The industry has also started testing drones and robots for inspections in hard-to-reach areas.

Instead of deploying a team for each visual check, this equipment can observe metallic structures, pipelines, elevated points, and areas with restricted access.

In 2025, Aker BP reported having carried out an offshore drone operation beyond the line of sight, an initiative linked to the advancement of autonomous inspections in the North Sea.

Safety and costs on uninhabited platforms

Safety appears among the main reasons cited by companies and industry specialists.

With fewer people on board, the exposure of workers to risks present in offshore operations decreases, such as bad weather, helicopter transport, fires, leaks, explosions, and medical emergencies in locations far from the coast.

Operational cost also weighs on the adoption of this model.

An inhabited platform requires accommodation, kitchen, water, sewage treatment, common areas, air logistics, medical support, and hotel services.

By reducing or eliminating these modules, the structure can become smaller and simpler, provided this is compatible with safety requirements.

This configuration can be considered in smaller, mature, or distant fields, where a conventional installation would have a high cost in relation to the expected production.

The evaluation, however, depends on technical studies, economic viability, environmental requirements, reservoir characteristics, and emergency response capability.

According to DNV, normally uninhabited platforms often appear as an alternative in specific scenarios, including as support structures for larger installations or as a solution for certain offshore fields.

Adoption is neither automatic nor universal, as each project needs to demonstrate that it can operate safely without a continuous crew presence.

Regulation of offshore platforms in Brazil

In Brazil, offshore oil exploration and production depend on a series of technical, environmental, and regulatory requirements.

The National Agency of Petroleum, Natural Gas and Biofuels acts in the authorization of platform operations, with analysis of operational safety and production measurement systems.

In recent offshore unit authorization processes, ANP reported that inspections and audits can begin already at the shipyard and continue after the platform’s arrival in the country.

This procedure seeks to verify if the installed systems correspond to what was approved and if the unit meets the necessary conditions to start production.

The Brazilian Navy also plays a relevant role in navigation safety.

Platforms need to be identified, signaled, and considered in maritime traffic.

In areas close to these structures, there are restrictions for unauthorized vessels, including due to the risk of collision and interference with operations.

Petrobras informs, based on norms from the Directorate of Ports and Coasts, that navigation and fishing are prohibited within a 500-meter radius around platforms, except for authorized support vessels.

In units without permanent crew, signaling, radar, and remote monitoring become even more important to maintain control of the surroundings.

Risks of offshore operation without permanent crew

Removing workers from the platform reduces direct exposure to accidents on site, but it does not eliminate the risks of the operation.

A prolonged communication failure, for example, can limit real-time monitoring and require the unit to automatically enter a safe condition.

Another critical point is response time.

On an inhabited platform, some of the initial actions can be performed by workers already on board.

On an uninhabited unit, physical intervention depends on sending technicians, vessels, helicopters, or drones, depending on the severity of the event, the distance from the coast, and weather conditions.

For this reason, projects of this type need to provide for redundancy in sensors, energy systems, communication, fire fighting, and emergency shutdown.

Corrosion protection, equipment self-diagnosis, and predictive maintenance are also features associated with continuous uncrewed operation.

Cybersecurity has become part of this discussion.

As a remote platform relies on data and command transmission, communication channels need to be protected against unauthorized access.

Industrial security experts point out that the digitalization of critical assets requires network control, authentication, monitoring, and incident response protocols.

Offshore Work and Onshore Operations Centers

Platforms without permanent crews do not mean an absence of workers in the oil industry.

The change occurs in the distribution of functions.

Some activities are shifted to onshore operations centers, engineering areas, data analysis, automation, specialized maintenance, and digital security.

This shift alters the professional profile required for some projects.

Remote operators, instrumentation technicians, automation engineers, integrity analysts, telecommunications specialists, and rapid response teams gain importance in the routine of uncrewed units.

At the same time, offshore operations continue to require in-person interventions.

Inspections, repairs, parts replacement, safety tests, and activities on specific equipment may still depend on temporarily deployed teams.

The difference is that these visits tend to occur on demand, not as a permanent occupation routine.

Uncrewed Platform Relies on Connection, Standards, and Supervision

The image of a platform operating without anyone on board suggests total autonomy, but actual operation depends on a broad network of supervision, infrastructure, and standards.

The unit may be physically isolated in the ocean, but it remains connected to control centers, telecommunication systems, support vessels, regulatory bodies, and technical teams.

This combination of automation, remote monitoring, and occasional visits explains why the model is called “normally uncrewed,” and not simply “unmanned.”

The platform performs routines autonomously, but within parameters defined by people and monitored by specialized teams.

In the current industry landscape, this type of installation appears as a technical alternative for certain oil and gas fields.

Its adoption depends on economic viability, environmental conditions, regulatory requirements, and the proven ability to operate safely without a permanent crew.